Question

which of the following best describes the fate of energy in ecosystems? a. it will ultimately be recycled back into the ecosystem. b. it flows from secondary consumers to primary consumers. c. it enters most ecosystems in the form of sunlight. d. it flows through and is used by ecosystems. please select the best answer from the choices provided

Explanation:

Energy in ecosystems enters mainly as sunlight (c is about input not fate). It doesn't recycle like nutrients (a is wrong). Energy flows from primary to secondary consumers (b is wrong). Energy flows through food - webs and is used for metabolic processes, so it flows through and is used by ecosystems.

Answer:

D. It flows through and is used by ecosystems.